xref: /illumos-gate/usr/src/lib/libxcurses2/src/libc/xcurses/vw_print.c (revision da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright (c) 1995-1998 by Sun Microsystems, Inc.
24  * All rights reserved.
25  */
26 
27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
28 
29 /* LINTLIBRARY */
30 
31 /*
32  * vw_print.c
33  *
34  * XCurses Library
35  *
36  * Copyright 1990, 1995 by Mortice Kern Systems Inc.  All rights reserved.
37  *
38  */
39 
40 #if M_RCSID
41 #ifndef lint
42 static char rcsID[] = "$Header: /rd/src/libc/xcurses/rcs/vw_print.c 1.3 "
43 "1995/08/30 19:37:28 danv Exp $";
44 #endif
45 #endif
46 
47 #include <private.h>
48 #include <stdarg.h>
49 
50 int
51 vw_printw(WINDOW *w, char *fmt, va_list ap)
52 {
53 	int	size = BUFSIZ;
54 	char	*buffer;
55 	int	n, rv;
56 
57 	buffer = (char *)malloc(size);
58 	if (buffer == NULL)
59 		return (ERR);
60 
61 	/* CONSTCOND */
62 	while (1) {
63 		n = vsnprintf(buffer, size, fmt, ap);
64 		if (n < size)
65 			break;
66 		size *= 2;
67 		buffer = (char *)realloc(buffer, size);
68 		if (buffer == NULL)
69 			return (ERR);
70 	}
71 	va_end(ap);
72 	rv = waddnstr(w, buffer, -1);
73 	free(buffer);
74 	return (rv);
75 }
76